Oil-stove



I UNrrnD STAT-Es PATENT ()ir'ricnlv WILLLfAlVl' l-l. WILDER, OEGARDNR, MASSAOUSETTS;

OIL-STOVE.

SPCIFICATIN forming part of Letters Patent No. 18,020, dated January 1'7, 1 899.

' Application nea :December 6,1397. serial no. 660,879. (No man.)

ticularly for the use of oil as 'a fuel, and `in some particulars embodies some of the features of a stovem'ade the subject of an application filed in the United States Patent Office on the 19th of April, 1897, Serial No. 632,859.

In the said application an oil-holder is used surmounted by a' combustion-chamber, and the oil-supply is furnished from a verticallyadjustable reservoir providing an automatically-maintained oil-level, and this oil-level is adjusted bodily by the movement of vthe reservoir, and this adjustment will of course raise or lower'the oil in the holder,- thus permitting the regulation of the flame bythe movement-of the reservoir.,V

While the construction referred to in'my application aforesaid is a very desirable one, -I found that certain advantages result from making the reservoir stationary and providing for the vertical adjustment of the burner or oil-holder in Vrelation to the automaticallymaintained oil-level, and it is one of the objects of the present invention to provide for this adjustment in a simple but eective manner. I have also aimed to improve the stove in other particulars.

In the drawings, Figure l shows a stove, partly in section and partly in side elevation. Fig. 2 is a sectional view of some of the parts. Fig. 3 illustrates a section of modification.

The frame of the stove may be of any ordinary or desirable construction, the end standards being indicated at A' and the top plate at B; The oil-holder is shown at C and is of annular form, providing a ring-shaped channelhaving a contracted .lower `portion which gradually increases in width to its upper end. It will be understood that the holder C is intended to contain oil, and Ithe vapor burned in the 'combustion-chamber D rises from the surface of the oil in. the holder C, the vaporization taking place by reason of the heat within the combustion-chamber adjacent to the oil-holder. The tapering shape of the oil-holder and its depth prevent Itotal vaporization and provide fora constant supply of the o il in the holder, except, of course, when the chamber isdrained by being ad-` justed above the-oil-level in the reservoir, The combustion-chamber l) is preferablyof the form shown in the application referred to.'

The oil-holder has a supply-tube passing across its center on a level with its lower edge, as at a, and this in turn is connected to a vertical tube b, which supplies the oil to the holder C through a pipe a. As the holder V'must have vertical movement in order-to regulate the flow of the oilthereto -itis necessary to provide a sliding connection between the-movable feed-pipe b and the stationaryr` pipe c, and this is done very simply byusingv for the pipe c a tube of larger diameter than the pipe b and adapted to surround the same, theiconnection between the pipes at theupper end of clhaving a suitable packing d.

The pipe b freely slides within the pipe c, and its lower end is open, so that the oil iiowsfrom the reservoir e and oil-chamber f,where' the level is automatically maintained ,through the tube g to'its vertical extension c and in through the open end of the pipe b.

As the oil is automatically maintained in the chamber f at 'a certain level, it will be seen that the oil-holder C will be full of oil', partially full, or empty, depending upon its adjustment in relation to the maintained oillevel. As it is elevated the oil drains out, and as itis lowered the oil rises in the holden In order to adjust the holder easily and intelligently,lp1'ovide a hand-wheel h, pivoted upon the bracket z', which is clamped to the lo, and I mark the hand-wheel on its periphery with words or signs, such as Out, Low, High, Light, and when these words are opposite the pointer they indicate' the working-position of the burner. The disk or handwheel h has a link m pivotally connected to it and pivoted tothe chaunel'a, so'that in the rotation of ,the hand-wheel the holder C is raisedvor lowered.-

In order to ignite the stove initially, it is necessary to separate the holder and combustion-chamber, and thus expose the surface of theoil in the holder, and in order to cause this separation at the proper time I use pro- IOO within the central opening of the oil-holder.

Thus as the holder is lowered the combustionchamber moves'down withit, being supported by it until the bottom o comes i'n-coutact with the projections fn, and further operation of lo the hand-wheel lowers the holderalone, leaving the combustionlchamber supported on the projections and exposiugthe oil in'the holder for the .purposes of ignition. Vaporizatiou may be begun by the use of a volatile liquid or in any suitable manner;

' It will be seen from the above that inthe lighting action the combustion-chamber is separated from the oil-holder or bowlby limiting or arresting the downward movement of zo the combustion-chamber, while the bowl or oilholder continues its downward movement. The combustion chamber is maintained in this elevated position with respect to the bowl, and air is admitted immediately to the bottom of the combustion-chamber for the combustion of the vapor, and in thisseparation, by

the limiting action 'on the combustiomchamber and the downward movement of the bowl, the oil rises iu the howl and is thus exposed 3c for lighting, which, together withl the air-supply, enables the ame to be produced quickly and to pass into the combustion-chamber.

It is necessary to provide a way of adjusting the burner audits operating mechanism 3 5 vertically as a whole, so that in settinlgxup' the stove any slight variations in the length of the vertical pipes c may be allowed for in t order to locate the burner in a definite relation to the oil-level, so that, for instance, when the*4 4o burner is down all the way the oil-holder or bowl will be flooded and when the burner is raised all the way the bowl will be completely drained. For this purpose the -bracket""1l, which carries allA the operating parts, is

clamped to the pipe in such a way that by loosening the clamping-screws the burner, with all the operating parts, may be properly adjusted to the desired height.

a' series .of radially-extending bars q; but I connect the inner endsv of the bars by au inclined ring r, this ring being positioned directly above the opening between the com# bustion-tubes, and in the boiling over of any liquid the ring o will shed it outwardly and prevent it from dropping into the annularcombustion-space.

IIeretofore it has been customary to aro range the oil-reservoir outside of the frame,

either at the rear or to one side, where it was liable to be wrenched and displaced in transportati'on and use, and I have aimed to overcome this'objection by locating the reservoir within the frame directly beneath .the top,

where it is protected and is easily accessible for filling or cleaning purposes. To protect it from the heat, I use a` shield s, having a flange 4 fitted into a depression around an opening in the top plate around the stove.

In case the valve a of the reservoir should fail t'o work properly and feed out more than difficulty if not correctedat the burner; but I, avoid any difficulty of this kind by arranging an overflow-pipe ii, which willv not permit the oil in the chamber f to get so far beyond in any suitable vessel. A very great advanburuer toward and from.the grate, in that when the llame is high the burner is in its -freely from the surrounding air, there being more clearance between the top ol the'burnerA and the gratefor the access of air tothe flame.

is required to support perfect combustion, and at this time the burner is raised. This increase aud decrease of the iiame when the burner is moved, respectively, away from and regular at the grate. y P,

I wish it to be understood that the projections n may be adjustably supported so as to tion-chamber in relation to the oil-holder.

arranged in connection with the chamber f, I 'do not limit myselfin this particular, as au overow might be provided in the f uel-holder nr' in lthe pipeline with the same results.

Under some circumstances I may makethe fuel-holder deeper-on one side than the other instead of having the bottom on a-"level, and this I have shown in Fig. 3. This construction. will materially aid in perfectly draining the holder. The most important `result of this .constructiouis that the oil may be lowered so as to be present only in a part of the deep side of the bowl, the high sideuot having any oil exposed for vaporization, and there-Would form of bowl will adapt the burner for suc' cessfully using light as well as heavy oils, for

of the bowl being exposed, while for the heavy for exposing the oil.

What I claim is- 1. In au oil-stove, a reservoir having a maintained oil-level, a burner comprising an oil-holder and a-combustion-chamber, a grate above the burner and means'for moving the burner toward or fromthe grato, substantially as described.

2. In an oil-stove, a reservoir having a maintained oil-level, a burner comprising an oil-holder and a combustion-chamber, means for separating the holder and combustionchamber in the said vertical movement for the usual'amonut of oil this would cause someV tage also results from tue adjustment of the- While I 'have shown the overflow-pipe as' oils all of the annular space would be utilized the ordinary level as to do any damage, and l fromthe pipe t the'overlow may be caught l lowest working position and can draw oxygen When the'ame is low, not so much oxygen toward the grate tends also to keep the heat change the limit of movement of thefeembus- -I rIIC not therefore be au annular surface of oil from p which the vapor could be generated'. 'This The grate E is of substantially ordinary 5o construction, comprising an outer ring p and the former only a small area on the deep side for moving the burner vertically and means l tially as described. Y A Y 3. In an oilsstove, a reservoir having-a purposes of ignition by limiting'the movement of` the combustion-chamber, substem` maintained oil-level, a burner comprising an oil-holder and a combustion-chamber, means for moving the burner vertically and ,stopsv in the path of the combustion-chamber for 'limiting its downward movement thereby Vseparating the oil-holder and chamber, sub.

stantially as described.

4'. In an oil-stove, the combination of a vburner.comprising an oil-holder, a combustion-chamber separable therefrom, operating means for moving the burner vertically, and means for limiting the movement of the combustion-chamber to separate it from the oilholder, substantially as described.

5. In an oil-stove, a reservoir having a maintained oil-level, a stationary pipe leading therefrom having a vertical extension,. a burner supported by said vertical extension and adjustable vertically, a bracket secured able in relation tothe 'oil-line and an indicating Adevice comprising a bracket and a movable part,said movable part being connected to the burner and adapt-ed to chan-gel its position in the movement thereof to indicate lthe condition of the burnerinrelatioii to the oil-level, substantially as described.

8. In an oil-stove` a reservoir, a pipe con.

nection having vertical extension, a burner vertically movable and supporting acombuss ported therebywith an operating connection to the burner and projections also car-ried by the bracket adapted to limit the downward movement of the combustion-chamber, substantially as described. 9. In an oil-stove, a burner having a combustion-chamber and a grate above the combastion-chamber Vand having an outwardly and downwardly inclined ring protecting the flame-passage and adapted to shed outwardly any liquid'falling toward thecombustion# space, substantially as described.

l0.' Inan oil-stove, a reservoir, avertically- `movable burner comprising an oil-holder, an

oil-chamber adapted to receive the oil from the reservoir means for maintaining the level of the oil in the sa'id chamber and an overdow-pipe from the said chamber adapted to prevent overow of the burner, substantially as described. v

1l. In an oil-stove, a reservoir having a maintained oil-le vel, afuel-holder of annular form said holder being deeper .upon one side than upon the other, and an oil-supply connection between the reservoir-and holder one of said parts being movable in relationto the other, substantially as described.

In testimony whereof I afx my in presence ofv two witnesses.

WILLIAM II. WILDER.

signature Witnesses:

H. M. GATES,- IC. H. 'STQCKWELL 4S tion-chamber, a bracket, a hand-wheel supi 

